• Mr.N.Devender
• Ms.M.Jahnavi
• Ms.T.Swetha

By using cloud services the sharing of data and other services related to cloud can be done easily. Where ever sharing of data with single are multiple entity's a group can be done efficiently to provide secure data integrity the data is verified in the group. The sum of authentications is been verified in the blocks of cloud the data modifications can be possible only by the authorized user. Once the user exit from a group. Then the user must re-signed with the existing user in the group, the existing user have to download the shared data and re-signed in the user revocation. So it requires more space for revocation of data in the cloud. To overcome this problem we use new mechanism called public auditing mechanism. This is used to share the data with efficient users and for data integrity. By this the existing user need not sign in the group and also the user any need to download the previously shared data. The public verifier is used to audit the integrity of shared data without accessing the data from the cloud. Even though some part of shared data is re-signed by the cloud this mechanism is able to verify the integrity of shared data and multiple auditing task simultaneously. By this the user efficiency and revocation is improved.

Integrity, shared data, revocation, efficiency, auditing.

"USER REVOCATION OF SHARED DATA THROUGH CLOUD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.26-28, March-2019, Available :http://www.jetir.org/papers/JETIRAR06006.pdf

"USER REVOCATION OF SHARED DATA THROUGH CLOUD", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp26-28, March-2019, Available at : http://www.jetir.org/papers/JETIRAR06006.pdf